TY - JOUR
T1 - Cortical representation of vowels reflects acoustic dissimilarity determined by formant frequencies
AU - Obleser, Jonas
AU - Elbert, Thomas
AU - Lahiri, Aditi
AU - Eulitz, Carsten
N1 - Funding Information:
This research was supported by the Deutsche Forschungsgemeinschaft and the Volkswagen-Stiftung. The authors wish to thank Michaela Schlichtling, Ursula Lommen and Isabella Paul for their help in data acquisition. We especially thank Eugen Diesch for supplying the stimulus material.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/2
Y1 - 2003/2
N2 - We studied neuromagnetic correlates of the processing of German vowels [a], [e] and [i]. The aim was (i) to show an influence of acoustic/phonetic features on timing and mapping of the N100m component and (ii) to demonstrate the retest reliability of these parameters. To assess the spatial configuration of the N100m generators, Euclidean distances between vowel sources were computed. Latency, amplitude, and source locations of the N100m component differed between vowels. The acoustically most dissimilar vowels [a] and [i] showed more distant source locations than the more similar vowels [e] and [i]. This pattern of results was reliably found in a second experimental session after at least 5 days. The results suggest the preservation of spectral dissimilarities as mapped in a F1-F2 vowel space in a cortical representation.
AB - We studied neuromagnetic correlates of the processing of German vowels [a], [e] and [i]. The aim was (i) to show an influence of acoustic/phonetic features on timing and mapping of the N100m component and (ii) to demonstrate the retest reliability of these parameters. To assess the spatial configuration of the N100m generators, Euclidean distances between vowel sources were computed. Latency, amplitude, and source locations of the N100m component differed between vowels. The acoustically most dissimilar vowels [a] and [i] showed more distant source locations than the more similar vowels [e] and [i]. This pattern of results was reliably found in a second experimental session after at least 5 days. The results suggest the preservation of spectral dissimilarities as mapped in a F1-F2 vowel space in a cortical representation.
UR - http://www.scopus.com/inward/record.url?scp=0037300773&partnerID=8YFLogxK
U2 - 10.1016/S0926-6410(02)00193-3
DO - 10.1016/S0926-6410(02)00193-3
M3 - Journal articles
C2 - 12527095
AN - SCOPUS:0037300773
SN - 0926-6410
VL - 15
SP - 207
EP - 213
JO - Cognitive Brain Research
JF - Cognitive Brain Research
IS - 3
ER -
